English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Evaluation of the plasmonic effect of Au and Ag on Ti-based photocatalysts in the reduction of CO2 to CH4

MPS-Authors
/persons/resource/persons237782

Dilla,  Martin
Research Group Nanobased Heterogeneous Catalysts, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Dilla, M., Pougin, A., & Strunk, J. (2017). Evaluation of the plasmonic effect of Au and Ag on Ti-based photocatalysts in the reduction of CO2 to CH4. Journal of Energy Chemistry, 26(2), 277-283. doi:10.1016/j.jechem.2016.09.009.


Cite as: http://hdl.handle.net/21.11116/0000-0006-E1EE-0
Abstract
Crystalline TiO2 (P25) and isolated titanate species in a ZSM-5 structure (TS-1) were modified with Au and Ag, respectively, and tested in the gas-phase photocatalytic CO2 reduction under high purity conditions. The noble metal modification was performed by photodeposition. Light absorbance properties of the catalysts are examined with UV-Vis spectroscopy before and after the activity test. In the gas-phase photocatalytic CO2 reduction, it was observed that the catalysts with Ag nanostructures are more active than those with Au nanostructures. It is thus found that the energetic difference between the band gap energy of the semiconductor and the position of the plasmon is influencing the photocatalytic activity. Potentially, plasmon excitation due to visible light absorption results in plasmon resonance energy, which affects the excitation of the semiconductor positively. Therefore, an overlap between band gap energy of the semiconductor and metal plasmon is needed. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.